Address review: handle NavigationFailed gracefully without rethrowing

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

installer/PowerToysSetupVNext/PowerToys.wxs

@@ -42,10 +42,10 @@
       <util:ProductSearch Id="SearchInstalledPowerToysUserVersion" Variable="DetectedPowerToysUserVersion" UpgradeCode="D8B559DB-4C98-487A-A33F-50A8EEE42726" Result="version" />
 
       <?if $(var.PerUser) = "true" ?>
-        <bal:Condition Message="PowerToys is already installed on this system for all users. We recommend first uninstalling that version before installing this one." Condition="MinimumVersion &gt;= DetectedPowerToysVersion OR WixBundleInstalled" />
+        <bal:Condition Message="PowerToys is already installed on this system for all users. We recommend first uninstalling that version before installing this one." Condition="MinimumVersion &gt;= DetectedPowerToysVersion" />
         <bal:Condition Message="The same or later version of PowerToys is already installed." Condition="TargetPowerToysVersion &gt;= DetectedPowerToysUserVersion OR WixBundleInstalled" />
       <?else?>
-        <bal:Condition Message="PowerToys is already installed on this system for current user. We recommend first uninstalling that version before installing this one." Condition="MinimumVersion &gt;= DetectedPowerToysUserVersion OR WixBundleInstalled" />
+        <bal:Condition Message="PowerToys is already installed on this system for current user. We recommend first uninstalling that version before installing this one." Condition="MinimumVersion &gt;= DetectedPowerToysUserVersion" />
         <bal:Condition Message="A later version of PowerToys is already installed." Condition="TargetPowerToysVersion &gt;= DetectedPowerToysVersion OR WixBundleInstalled" />
       <?endif?>
 

src/settings-ui/Settings.UI/ViewModels/ShellViewModel.cs

@@ -9,6 +9,7 @@ using System.Linq;
 using System.Threading.Tasks;
 using System.Windows.Input;
 
+using ManagedCommon;
 using Microsoft.PowerToys.Settings.UI.Helpers;
 using Microsoft.PowerToys.Settings.UI.Library;
 using Microsoft.PowerToys.Settings.UI.Library.Helpers;
@@ -135,7 +136,18 @@ namespace Microsoft.PowerToys.Settings.UI.ViewModels
 
         private void Frame_NavigationFailed(object sender, NavigationFailedEventArgs e)
         {
-            throw e.Exception;
+            var sourcePage = e.SourcePageType?.FullName ?? "<unknown>";
+
+            if (e.Exception is null)
+            {
+                Logger.LogWarning($"Navigation to '{sourcePage}' failed without an exception.");
+            }
+            else
+            {
+                Logger.LogError($"Navigation to '{sourcePage}' failed.", e.Exception);
+            }
+
+            e.Handled = true;
         }
 
         private void Frame_Navigated(object sender, NavigationEventArgs e)